M
- MAT: Minimum Alternative Tax
- MER: Mars Exploration Rover
- MBBS: Bachelor of Medicine and Bachelor of Surgery
- MCF: Master Control Facility
- MEP: Minimum Export Price
- MES: Military Engineering Service
- METSAT: Meteorological Satellite
- MFA: Multi-Fibre Agreement
- MFN: Most Favoured Nation
- MIP: Moon Impact Probe
- MMS: Multimedia Messaging Service
- MMTC: Minerals and Metals Trading Corporation of India
- MNC: Multi-national Corporation
- MNIC: Multi-purpose National Identity Card
- MODEM: Modulator-Demodulator
- MRI: Magnetic Resonance Imaging
- MRTPC: Monopolies and Restrictive Trade Practices Commission
- MRTS: Mass Rapid Transit System
- MSA: Maritime Safety Agency
- MSCF: Maritime Security Cooperation Framework
- Mss: Manuscript
- MTCR: Missile Technology Control Regime
- MTO: Multilateral Trade Organisation
- MVC: Maha Vir Chakra
- MUNO: Maha Vir Chakra
